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CALIBRATION OF CHANNEL MISMATCHING AND SENSOR COUPLING IN DIRECTION AND FREQUENCY ESTIMATIONS |
Wang Xueli①; Li Shunming②; Chen Zhongyi③; Yu Jing③ |
①Mechanical Engineering Department Xi 'an Jiaotong University Xi 'an 710049;②Northwest Polytechnic University Xi 'an 710072;③Mechanical Engineering Department Zhejiang University Hangzhou 310027 |
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Abstract In this paper, the mechanism of the performance degration due to channel mismatching and sensor coupling in azimuthms and frequencies is analyzed. A new comprehensive calibration method that can compensate error by a known sound source is proposed. The method is easy to be implemented and the results of acoustic experiments in anechoic room show that offered method is effective.
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Received: 11 June 1998
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